The History of the Sextant
for at least two millennia, navigators have known how to determine their latitude — their position north or south of the equator. At the North Pole, which ...
The Evolution of the Sextant - November 1936 Vol. 62/11/405
The first mechanical instrument used for measuring angles, particularly in connection with navigation, was the astrolabe.
Sextant ... This article is about the sextant as used for navigation. For other uses, see Sextant (disambiguation). Not to be confused with Sexton (disambiguation) ...
Origins of the Sextant - American Scientist
The sextant as a navigational instrument was developed in the 18th century, but the sextant as an astronomical instrument has been around for much longer.
ION Museum: Sextant with beveled scale
Item History: The sextant, an instrument for measuring angles, was developed from a suggestion by Captain John Campbell of the Royal Navy in 1757. Those ...
Sextant | Navigation, Celestial Measurement & Astronomy | Britannica
Sextants were first developed with wider arcs for calculating longitude from lunar observations, and they replaced octants by the second half of the 18th ...
Sextant - USS Constitution Museum
Navigators used sextants to measure the angle between a visible object, like the sun or a star, and the horizon. Using mirrors and a scale, the sextant provided ...
Celestial Navigation Episode 7: The Sextant - History and Principle
Free resources and information on Celestial Navigation books: https://www.marinenavigationbooks.com/ The Sextant is an instrument that ...
Navigating to the Sextant | Naval History Magazine
The quadrant was a simple antecedent to the sextant. The quarter-circle scale allowed direct readings of the altitude of stars above the horizon to help ...
Navigation history - Sextants - Sail World Cruising
"He observes that even as late as the early twentieth century basically the only way to navigate a smaller sailing vessel across an ocean was ...
An Industrial Showpiece: The Sextant as an Eighteenth-Century ...
On naval and merchant ships, astronomers taking celestial measurements using instruments such as astrolabes, backstaffs, octants, and sextants ...
A Comprehensive Guide to Marine Sextant
The sextant is a valuable instrument used to determine the angle between the horizon and a celestial body like the Sun, Moon or Star.
The Sextant – a Celestial Navigation Tool - Van Isle Marina
The sextant is an instrument that uses reflecting mirrors to determine the distance between a celestial object (sun, moon, planet, star) and the horizon.
There are many books and instructional literature regard- ing the practical use of sextants. Standpoint. Equator Celestial Equator. Horizon. Sun. Celestial ...
The History of the Sextant (continued)
The standard of excellence for post World War II sextants was established by the C. Plath firm in Germany. Here's an example from 1988.
Navigators need an angle-measuring instrument, a sextant, to measure the angle of the celestial body above a horizontal line of reference.
Sextants and the History of Celestial Navigation - YouTube
Like what I make? Want fewer sponsorship ad reads? Consider contributing to my Patreon at https://patreon.com/OurOwnDevices The sextant is a ...
West Sea Co. Evolution of the Sextant
This "double frame" sextant was made by numerous makers using slight modifications for more than one hundred years thereafter. A variation of the double frame ...
Sextant - (Environmental History) - Vocab, Definition, Explanations
The sextant contributed significantly to the success of global maritime empires by enabling precise navigation that facilitated efficient trade routes. By ...
Its primary use is to determine the angle between a celestial object and the horizon which is known as the altitude. Making this measurement is ...